Gas heated utensil



Jan. 19, 1932.

A. C. BECKER GAS HEATED UTENsIL Filed oct. 22, 1928 4 Sheets-Sheet l.

www: @dev @JWM A. c. BECKER GAS HEATED UTENSIL Filed oct. 22. 192s Jan. 19, 1932.

4 Sheets-Sheet y2 .munita alalggyw i" Jt'fmegs Jan. 19, 1932. A, C, BECKER 4 1,842,062

GA'S HEATED U'KIENSIL' File oct. 22, 192s 4 sheets-sheet s Jan. 19, 1932. A. c. BECKER 1,842,062

` GAs-HEATED UTENSIL Filed Oct. 22, 1928 4 Sheets-Sheet 4 Patented Jen. 19, 1932 ATLIE'RED C'URT BECKER, OF OBERSGHONEWEIDE, NEAR BERLIN, GERMANY GAs HEATED UTENSIL Application led October 22, 1928, Seriall No. 314,056, and in Germany ctober 26, 1927.

The invention relates to a gas-heated utensil and consists, 4on the one hand, therein,v

that this utensil has been equipped with an interrupting device which automatically 5 cuts oil' the supply of gas to the burner after attaining a certain degree of heat -within th'e insulated space. y

It consists, on the other hand, therein, that a device is providedwhich is capable of being opened by a Haine which simultaneously guarantees the ignition of the gas escaping from the burner. e

Finally the invention consists inthe suitL able design of these devices, as Well as in the l5 utensil as such.

In' the drawings the invention has been represented by way of example in which Fig. l shows a section through a utensil yin front-view in accordance with the inven- 2o tion, v l

Fig.A 2 represents a lateral or side view of the'utensil (partly in section), Fig.`3 isa plan-view (partly in section in the direction A, B of Fig. 2)', ,l i i '25 Fig. 4 'is a switching-device with heatireleaser in accordance with the invention, in section',

Fig. .4a represents a detail of a rack and f pinion shown in Fig. `4, e Fig. 5 shows a View of the switching-device in the direction D, Fig. 4.

Fig. 6 illustrates a view of the switchingdevice from the direction C, Fig. 4.

Fig. 7 representsagas-switchingfand igf nition-device in -section in accordance with the invention,

Figs. 7 a and 7 b each show-a section through a gasfcock in open andin closed condition.

The drawings (Figs. 1 3)` represent an economic cooking-utensil which has been designed to resemble a box orcase and permits of beine' closed by means of a door b. The utensil 1s supported by feet c1 consisting of sheet-metal which form a whole together with the walls c. The walls c' of the utensil are made to 'consist of sheet-metal, the inside surface of which have been lined with materials d 0 properties. Thepdoor b may be closed and rendered heat-proof with the aid of the latch possessing bad. heat conducting- ?)1 and an eye b2. For this purose the doorframe has been provided with bad heat-conductors. When being opened the door I) is supported ina horizontal position by a collapsible system of rods g. The door has, moreover, been provided with a grill ,71, which isv intended 'to facilitate the removal of the cookinglvessels from the utensil. This grill k is of such construction that, When closing the utensil it may be suspended froml the ineov side of the door bl beside the superposed .cooking-vessels.l The grill may'also be detached from the doorb, where it has been attached. to the button la and permits of being displaced longitudinally by means of the l slot k1. To this end the slot 761 is provided at one end with an' enlargement 2.22 which is 0i somewhat larger dimensions than the button lc. This renders possible an easy and convenient cleaning of the grill.

The economic cooking utensilv possesses aheating chamber m Withinrwhich the burners 0 have been installed. This heating chamber is closed in an upward direction by means of the plate p which simultaneously furnishes 'l the supportfor .the cooking-vessels z'. The heating-chamber m communicates with the atmosphere by means of an escape g for waste-gases. This waste-gas outlet has, as well as the interior of the cooking utensil been lined with sheet-metal. v At the side of the utensil a switching device with heat-releaser has Ibeen Titted in accordance with Fig. 4. This consists of a main lgas-cock n which permits of being moved by the joint-action of a pinion r and a rack s per 4a. If the press-button s1, which 1s rigidly connected with'the rack s, is

pressed in^, the main-cock fn, will be openedA as avresult of this movement. The rack 8 is 90 now 4held in its position by a`latch t loaded with weight 152 said latch permitting of being fswung round a point t1. u is a spiralshaped bi-metal springwhich has been attached to its spindle u2. An increasing 95 temperature will cause the spring u to curl up andl to catch with its end u1 the latch t i in such a manner, that the latter is swung round the point t1, causing .the latch to be lifted up. A spring s2 will now cause the o0 aid of the milled disk ill vice (Fig. (i) M which acts to regulate the time at which the rack to be returned to its original position, whereby the main gas-cock fa will be closed. The whole of the enclosed space, within which this device has been installed communicates with the interior of the cooking-utensil by means ot thin sheet-metal partitions c) of heat conducting properties which, by way of example. as per-the drawing Fig. 4, act as heat-coiulcnsers. Through the switchingspace of the heat-releaser a tube el has, moref over been n'iade to pass which causes the interior ot the utensil to communicate with the atmosphere. This tube-conduit @l is in tended to act as safety-valve in case of possible break-downs. The heat releasing device described above is to cut ot'l' the gas-supply, as :zoon as the goods being cooked, have attained a certain temperature, say 1000. lf now the device does not cut oil the gassupply at this point, this will be rendered noticeable by the escape ot steam .from the openings 'al of the tube-cap c".

Viewed in direction C ot' the switching-dea device may be recognized cutting oil' of the gas-supply may be eitected. The spindle a2 has been extended to project beyond the utensil vand is provided at its end a with a pointer a. rIhe pointer posscsscs a slot not drawn within which a pin, likewisenot drawn, may be moved along. The pin is attached to a nut a1' and movably disposed by turning the spindle a2 with the a3 by hand. This will be swung round and with it the spindle u2, as 'well as the spring u, whereby the way or the distance, which the end al ot the spring has t'o cover until -re leasing the latch may be altered. The pointer av indicates upon a scale the releasing temperature prevailing at the time.

It the mai'ncock nl has been opened by pressing in the press-button s1, the gas will be made to flow through the conduit nl to the gascock n?. which is closed for the time being. It will, however, be seen from the Figs. 7a and 7b that its construction is such, that even when closed, it will allow gas to pass through the ignitioirconduit .e to the opening for the ignition-llame al and to the ignition burner z2. If now the ignition-burner z2 is lighted, the gas escaping at al is conducted to the ignition-burner a2 through the medium of the super-conduit z3, where it is ignited. The flame lights back and also ignites the ignition-flame a". The ignitionburner 52, the flame of which may be regulated through the milled screw at, now heats the spiral-shaped bi-metal spring w which with its inner end has been attached to a spindle w1 and with its outer end to its casing wz. Owing to its being heated the bi-metal spring w will be caused to expand, thereby turning the spindle w1 being the only movable part, because the casing 102 has been cause the pointer to rigidly connected with the whole of the device. In View of the fact that the spindle w1 is firmly connected with the plug ot" the gascock a2, the latter will be opened. Gas will now also flow through the main-conduit n to the burner where it is ignited by the ignition-llame al. If the gas-cock n2 has been wholly opened, the gas-supply for the ignition-conduit a will be throttled, as can be seen from Fig. 7?) at the point The llame of the ignition-burner .a2 will thereby be rendered smaller, because it now has only to maintain the temperature of vthe bi-metal spring w and not to increase it, because otherwise the spring w might break or be prematurely fatigued.

If now the temperature adjusted upon by means of the regulating device, has been at tained, the main gas-cock will be suddenly closed. rThis will cause all burners to be extinguished, the bi-n'ietal-spring will grow cold again, contracts and thereby closes the gas-cock fag.

I claim l. In a cooking utensil with a space inclosed by insulated walls, a gas burner, a conduit for feeding the gas burner, a closing de vice within the conduit, at the closing-device a heat-switch which is suitable to open the closing device under the action of the heat, and being arranged exteriorly of said space, an ignition-flame conduit for said burner and in the ignition-flame conduit an outlet-passage exteriorly of said space and in such a position to the heat-switch, that the gas ignited here is suitable to heat the heat-switch and means, which are suitable to guarantee the lighting of the burner, when said flame is ignited.

2. In a cooking utensil in accordance with claim l, a closed space tov be heated and in front of the gas closing-device a second gas closing-device which is suitable to bevopened by hand and upon attaining a certain heat within the said space to autolnatically actuate the closin device.

3. In a coo ring utensil in accordance with claim l, in the gas closing-device a gas-cock which is suitable when being closed, to fully supply the ignition-conduit with gas and when in an open condition, to throttle the suppl to the ignition-conduit.

4. n a cooking utensil in accordance with claim l, in the ignition-conduit a second outlet-passage near the burner and means between the two outlet-passages which are suitable to ignite the gas escaping from the second passage, if the gas at the first outletpassage is ignited.4

l In a cooking utensil in accordance with claim l, a heat-switch consisting ot a bimet-a1 spring.

In testimony whereof I afliX my signature.

ALFRED CURT BECKER. 

